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Setup dynamic library loading at runtime.
Signed-off-by: furby™ <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| /* -------------------------------------------------------------- | ||
| * :: : K R A K E N : :: | ||
| * -------------------------------------------------------------- | ||
| * @wabistudios :: metaverse :: kraken | ||
| * | ||
| * This program is free software; you can redistribute it, and/or | ||
| * modify it under the terms of the GNU General Public License as | ||
| * published by the Free Software Foundation; either version 2 of | ||
| * the License, or (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Check out | ||
| * the GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy for this software license, the | ||
| * GNU General Public License along with this program; or, if not | ||
| * write to the Free Software Foundation, Inc., to the address of | ||
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | ||
| * | ||
| * Copyright (C) 2023 Wabi Foundation. | ||
| * All Rights Reserved. | ||
| * -------------------------------------------------------------- | ||
| * . x x x . o o o . x x x . : : : . o x o . : : : . | ||
| * -------------------------------------------------------------- */ | ||
|
|
||
| import Foundation | ||
| import MetaversePlugin | ||
| import PixarUSD | ||
|
|
||
| public extension Kraken | ||
| { | ||
| enum Plugin | ||
| { | ||
| public typealias InitFunction = @convention(c) () -> UnsafeMutableRawPointer | ||
|
|
||
| public static func load(at path: String) -> MetaversePlugin | ||
| { | ||
| let openRes = dlopen(path, RTLD_NOW | RTLD_LOCAL) | ||
| if openRes != nil | ||
| { | ||
| defer | ||
| { | ||
| dlclose(openRes) | ||
| } | ||
|
|
||
| let symbolName = "createPlugin" | ||
| let sym = dlsym(openRes, symbolName) | ||
|
|
||
| if sym != nil | ||
| { | ||
| let f: InitFunction = unsafeBitCast(sym, to: InitFunction.self) | ||
| let pluginPointer = f() | ||
| let builder = Unmanaged<MetaversePluginBuilder>.fromOpaque(pluginPointer).takeRetainedValue() | ||
| return builder.build() | ||
| } | ||
| else | ||
| { | ||
| fatalError("error loading lib: symbol \(symbolName) not found, path: \(path)") | ||
| } | ||
| } | ||
| else | ||
| { | ||
| if let err = dlerror() | ||
| { | ||
| fatalError("error opening lib: \(String(format: "%s", err)), path: \(path)") | ||
| } | ||
| else | ||
| { | ||
| fatalError("error opening lib: unknown error, path: \(path)") | ||
| } | ||
| } | ||
| } | ||
|
|
||
| public static func info(at path: String) | ||
| { | ||
| let plugin = Kraken.Plugin.load(at: path) | ||
| let name = plugin.name | ||
|
|
||
| Msg.logger.info("Loaded plugin { name: \(name), path: \(path) }") | ||
| } | ||
| } | ||
| } |
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